Do you means that you had placed a pullup on the wrong side of the converter ?
Here we see pullups on both sides, but this is because it is a bi-directional level-shifter, such as I2C.
When used as uni-directional, only the receiver side requires a pullup.

You can jump to the reset vector, but it won't be the same as doing external reset, especially is reset line is also used to reset external peripheral.
But, you can also use an GPIO attached to RES and trigger it from software.